Adds RemoteGetActiveBackends() call to remoteutil.cpp

Adds a call to use the new backend protocol method to retrieve a list of
all currently available backends.  Inserts values into a QStringList.

Author: wagnerrp

mythtv/libs/libmyth/remoteutil.cpp

@@ -571,4 +571,19 @@ vector<ProgramInfo *> *RemoteGetCurrentlyRecordingList(void)
     return reclist; 
 }
 
+/**
+ * \brief return list of backends currently connected to the master
+ */
+bool RemoteGetActiveBackends(QStringList *list)
+{
+    list->clear();
+    *list << "QUERY_ACTIVE_BACKENDS";
+
+    if (!gCoreContext->SendReceiveStringList(*list))
+        return false;
+
+    list->removeFirst();
+    return true;
+}
+
 /* vim: set expandtab tabstop=4 shiftwidth=4: */

mythtv/libs/libmyth/remoteutil.h

@@ -48,6 +48,7 @@ MPUBLIC vector<ProgramInfo *> *RemoteGetCurrentlyRecordingList(void);
 
 MPUBLIC bool RemoteGetFileList(QString host, QString path, QStringList* list,
                        QString sgroup, bool fileNamesOnly = false);
+MPUBLIC bool RemoteGetActiveBackends(QStringList *list);
 
 #endif